text: /*
   *
   * honggfuzz - architecture dependent code
   * -----------------------------------------
   *
   * Author: Robert Swiecki <swiecki@google.com>
   *
   * Copyright 2010-2018 by Google Inc. All Rights Reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may
   * not use this file except in compliance with the License. You may obtain
   * a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
   * implied. See the License for the specific language governing
   * permissions and limitations under the License.
   *
   */
  
  #ifndef _HF_LINUX_UNWIND_H_
  #define _HF_LINUX_UNWIND_H_
  
  #include <linux/limits.h>
  #include <sys/types.h>
  
  /* String buffer size for function names in stack traces produced from libunwind */
  #define _HF_FUNC_NAME_SZ 256  // Should be alright for mangled C++ procs too
  
  #define _HF_MAX_FUNCS 80
  typedef struct {
      void* pc;
  
      /* If ASan custom parsing, function not available without symbolication */
      char func[_HF_FUNC_NAME_SZ];
  
      /*
       * If libuwind proc maps is used to retrieve map name
       * If ASan custom parsing it's retrieved from generated report file
       */
      char mapName[PATH_MAX];
  
      /*
       * If libunwind + bfd symbolizer, line is actual symbol file line
       * If libunwind + custom (e.g. Android), line is offset from function symbol
       * If ASan custom parsing, line is offset from matching map load base address
       */
      size_t line;
  } funcs_t;
  
  extern size_t arch_unwindStack(pid_t pid, funcs_t* funcs);
  extern char* arch_btContainsSymbol(
      size_t symbolsListSz, char** symbolsList, size_t num_frames, funcs_t* funcs);
  
  #endif
  